Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share Reconciliation [Abstract]

Components Of Basic And Diluted Earnings Per Share

The components of basic and diluted earnings per share are as follows (in thousands, except share and per share data):

	Year Ended December 31,
	2012			2011			2010
Numerator for basic and diluted net income per common share:
Net income attributable to j2 Global, Inc. common shareholders	$	121,580		$	114,766		$	83,047
Net income available to participating securities (a)	(2,075		)	(1,932		)	—
Net income available to j2 Global, Inc. common shareholders	119,505			112,834			83,047
Denominator:
Weighted-average outstanding shares of common stock	45,459,712			45,799,615			44,578,036
Dilutive effect of:
Dilutive effect of equity incentive plans	321,946			585,233			1,363,807
Common stock and common stock equivalents	45,781,658			46,384,848			45,941,843
Net income per share:
Basic	$	2.63		$	2.46		$	1.86
Diluted	$	2.61		$	2.43		$	1.81

(a) Represents unvested share-based payment awards that contain certain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid).